Bip39 derivation https://rentry.co/p68weyby BIP85: A newer proposal letting the deterministic derivation of many BIP39 mnemonic seeds from the learn seed. For words that have only three letters, there isn't a 4th letter. Such as with the word “add”, there are no more letters afterwards and so must be the word https://ragingbookmarks.com/story19847472/bip39-min-js-not-known-factual-statements-about-bip39-word-list-txt-https-t-me-bip39-chat